Ground electrode



FIG. 1 is a top plan view of a ground electrode showing our new design,

FIG. 2 is a front view thereof,

FIG. 3 is a bottom plan view thereof,

FIG. 4 is a right side view thereof,

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top perspective view thereof. 

The ornamental design for a ground electrode, as shown and described. 